互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本,课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒19. promise 1) n. a) [C] a statement that you certainly will or will not do sth. b) [U] signs or hope of success or improvement 2) v. to state that you will certainly do sth.
Give me your promise that you'll never be late again.
The young man shows promise as a poet.
He promised to help us.
Useful expressions 1.take part in Are you going to take part in the first experiment?
I don’t want to take part in this kind of activity.
He took part in the football game yesterday.
2.a set of